Producer

In Apache Kafka, Producer is a client application that sends data to a Kafka cluster. The producer is responsible for publishing records on one or more Kafka topics. Each record is a Key-value pair stored in a topic partition within the cluster. The producer sends records to a Kafka broker which then writes data to appropriate Kafka topics.

A Kafka producer can be implemented in different languages such as Python, Java or Scala, using Kafka client API. Producers can configure various settings such as compression size, partition strategy and serialization format to optimize the performance and reliability of data delivery.

The Producer can also specify the callback function that is invoked after the record is sent successfully or after an error occurs. This allows the Producer to handle different scenarios like retries or error logging.

Overall, The Producer plays a critical role in the Kafka messaging system by publishing records from different sources to Kafka topics.